How to get rid of one of the weights in a two-weight Poincaré inequality?
We prove that if a Poincaré inequality with two different weights holds on every ball, then a Poincaré inequality with the same weight on both sides holds as well.
How to Obtain Vector-Valued Banach-Stone Theorems by Using M-Structure Methods.
How to solve an operator equation.
This article summarizes a series of lectures delivered at the Mathematics Department of the University of Leipzig, Germany, in April 1991, which were to overview techniques for solving operator equations on C*-algebras connected with methods developed in a Spanish-German research project on "Structure and Applications of C*-Algebras of Quotients" (SACQ). One of the researchers in this project was Professor Pere Menal until his unexpected death this April. To his memory this paper shall be dedicated....
Hp (Rn) is equidistributed with Lp (Rn).
Hull-minimal ideals in the Schwartz algebra of the Heisenberg group
For every closed subset C in the dual space of the Heisenberg group we describe via the Fourier transform the elements of the hull-minimal ideal j(C) of the Schwartz algebra and we show that in general for two closed subsets of the product of and is different from .
Hyers-Ulam constants of Hilbert spaces
The best constant in the Hyers-Ulam theorem on isometric approximation in Hilbert spaces is equal to the Jung constant of the space.
Hyers-Ulam-Rassias stability of generalized derivations.
Hyers-Ulam-Rassias stability of homomorphisms in quasi-Banach algebras.
Hyers-Ulam-Rassias stability of the Apollonius type quadratic mapping in RN-spaces.
Hyperbolic equations and irregularity
Hyperbolic evolution semigroups on vector valued function spaces.
Hyperbolic geometry on noncommutative balls.
Hyperbolic-like manifolds, geometrical properties and holomorphic mappings
The authors are dealing with the Dirichlet integral-type biholomorphic-invariant pseudodistance introduced by Dolbeault and Ławrynowicz (1989) in connection with bordered holomorphic chains of dimension one. Several properties of the related hyperbolic-like manifolds are considered remarking the analogies with and differences from the familiar hyperbolic and Stein manifolds. Likewise several examples are treated in detail.
Hypercontractivité pour les fermions, d'après Carlen-Lieb
Hypercyclic and chaotic weighted shifts
Extending previous results of H. Salas we obtain a characterisation of hypercyclic weighted shifts on an arbitrary F-sequence space in which the canonical unit vectors form a Schauder basis. If the basis is unconditional we give a characterisation of those hypercyclic weighted shifts that are even chaotic.
Hypercyclic convolution operators on entire functions of Hilbert-Schmidt holomorphy type
Hypercyclic operators with an infinite dimensional closed subspace of periodic points.
Let X be an infinite dimensional separable Banach space. There exists a hypercyclic operator on X which is equal to the identity operator on an infinite dimensional closed subspace of X.
Hypercyclicity of convolution operators on spaces of entire functions
In this paper we use Nachbin’s holomorphy types to generalize some recent results concerning hypercyclic convolution operators on Fréchet spaces of entire functions of bounded type of infinitely many complex variables
Hyperfinite Factors and Amenable Ergodic Actions.
Hyperfonctions et équations aux dérivées partielles